Powder comprising hydrolyzable resin particles
AssigneeToyo Seikan Group Holdings, Ltd.
InventorsSeishi YOSHIKAWA, Toshiki YAMADA, Tsutaki KATAYAMA
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Abstract
A powder comprising hydrolyzable resin particle, containing particles which do not pass through a sieve having an opening size of 500 μm in an amount of 50 mass % or more and having a repose angle of 51° or more. This powder is preferably used as an additive for drilling to enhance the drilling properties of a drilling fluid and improve the retentivity of a fracture extending from a winze.
Claims6
A powder comprising hydrolyzable resin particles, containing particles which do not pass through a sieve having an opening size of 500 μm in an amount of 50 mass % or more and having a repose angle of 51° or more.
Dependencies are inferred from the claim text.